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d15a28e7 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d15a28e7 | 18 | //_________________________________________________________________________ |
b2a60966 | 19 | // RecPoint implementation for PHOS-EMC |
20 | // An EmcRecPoint is a cluster of digits | |
baef0810 | 21 | //*-- |
b2a60966 | 22 | //*-- Author: Dmitri Peressounko (RRC KI & SUBATECH) |
23 | ||
d15a28e7 | 24 | |
25 | // --- ROOT system --- | |
9f616d61 | 26 | #include "TPad.h" |
27 | #include "TH2.h" | |
d15a28e7 | 28 | #include "TMath.h" |
9f616d61 | 29 | #include "TCanvas.h" |
d15a28e7 | 30 | |
31 | // --- Standard library --- | |
32 | ||
de9ec31b | 33 | #include <iostream.h> |
d15a28e7 | 34 | |
35 | // --- AliRoot header files --- | |
36 | ||
a6eedfad | 37 | #include "AliGenerator.h" |
d15a28e7 | 38 | #include "AliPHOSGeometry.h" |
39 | #include "AliPHOSEmcRecPoint.h" | |
40 | #include "AliRun.h" | |
7b7c1533 | 41 | #include "AliPHOSGetter.h" |
d15a28e7 | 42 | |
43 | ClassImp(AliPHOSEmcRecPoint) | |
44 | ||
45 | //____________________________________________________________________________ | |
7932f811 | 46 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint() |
d15a28e7 | 47 | { |
48 | // ctor | |
49 | ||
50 | fMulDigit = 0 ; | |
51 | fAmp = 0. ; | |
7932f811 | 52 | fCoreEnergy = 0 ; |
53 | fEnergyList = 0 ; | |
9688c1dd | 54 | fTime = -1. ; |
a6eedfad | 55 | fLocPos.SetX(1000000.) ; //Local position should be evaluated |
7b7c1533 | 56 | |
83974468 | 57 | } |
58 | ||
73a68ccb | 59 | //____________________________________________________________________________ |
60 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) : AliPHOSRecPoint(opt) | |
61 | { | |
62 | // ctor | |
63 | ||
64 | fMulDigit = 0 ; | |
65 | fAmp = 0. ; | |
66 | fCoreEnergy = 0 ; | |
67 | fEnergyList = 0 ; | |
68 | fTime = -1. ; | |
69 | fLocPos.SetX(1000000.) ; //Local position should be evaluated | |
70 | ||
71 | } | |
72 | ||
83974468 | 73 | //____________________________________________________________________________ |
74 | AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint() | |
75 | { | |
88714635 | 76 | // dtor |
a4e98857 | 77 | |
83974468 | 78 | if ( fEnergyList ) |
79 | delete[] fEnergyList ; | |
d15a28e7 | 80 | } |
81 | ||
d15a28e7 | 82 | //____________________________________________________________________________ |
83974468 | 83 | void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy) |
d15a28e7 | 84 | { |
b2a60966 | 85 | // Adds a digit to the RecPoint |
a4e98857 | 86 | // and accumulates the total amplitude and the multiplicity |
d15a28e7 | 87 | |
7932f811 | 88 | if(fEnergyList == 0) |
89 | fEnergyList = new Float_t[fMaxDigit]; | |
90 | ||
d15a28e7 | 91 | if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists |
9f616d61 | 92 | fMaxDigit*=2 ; |
83974468 | 93 | Int_t * tempo = new ( Int_t[fMaxDigit] ) ; |
9f616d61 | 94 | Float_t * tempoE = new ( Float_t[fMaxDigit] ) ; |
95 | ||
96 | Int_t index ; | |
d15a28e7 | 97 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
83974468 | 98 | tempo[index] = fDigitsList[index] ; |
d15a28e7 | 99 | tempoE[index] = fEnergyList[index] ; |
100 | } | |
101 | ||
9f616d61 | 102 | delete [] fDigitsList ; |
83974468 | 103 | fDigitsList = new ( Int_t[fMaxDigit] ) ; |
9f616d61 | 104 | |
105 | delete [] fEnergyList ; | |
106 | fEnergyList = new ( Float_t[fMaxDigit] ) ; | |
107 | ||
108 | for ( index = 0 ; index < fMulDigit ; index++ ){ | |
109 | fDigitsList[index] = tempo[index] ; | |
110 | fEnergyList[index] = tempoE[index] ; | |
111 | } | |
112 | ||
113 | delete [] tempo ; | |
114 | delete [] tempoE ; | |
115 | } // if | |
d15a28e7 | 116 | |
83974468 | 117 | fDigitsList[fMulDigit] = digit.GetIndexInList() ; |
118 | fEnergyList[fMulDigit] = Energy ; | |
119 | fMulDigit++ ; | |
d15a28e7 | 120 | fAmp += Energy ; |
7932f811 | 121 | |
122 | EvalPHOSMod(&digit) ; | |
d15a28e7 | 123 | } |
124 | ||
125 | //____________________________________________________________________________ | |
ad8cfaf4 | 126 | Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const |
d15a28e7 | 127 | { |
a4e98857 | 128 | // Tells if (true) or not (false) two digits are neighbors |
d15a28e7 | 129 | |
130 | Bool_t aren = kFALSE ; | |
131 | ||
7b7c1533 | 132 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
133 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
134 | ||
d15a28e7 | 135 | Int_t relid1[4] ; |
92862013 | 136 | phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ; |
d15a28e7 | 137 | |
138 | Int_t relid2[4] ; | |
92862013 | 139 | phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ; |
d15a28e7 | 140 | |
92862013 | 141 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
142 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 143 | |
92862013 | 144 | if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0)) |
d15a28e7 | 145 | aren = kTRUE ; |
146 | ||
147 | return aren ; | |
148 | } | |
149 | ||
150 | //____________________________________________________________________________ | |
2a941f4e | 151 | Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const |
d15a28e7 | 152 | { |
b2a60966 | 153 | // Compares two RecPoints according to their position in the PHOS modules |
154 | ||
7932f811 | 155 | Float_t delta = 1 ; //Width of "Sorting row". If you changibg this |
156 | //value (what is senseless) change as vell delta in | |
157 | //AliPHOSTrackSegmentMakerv* and other RecPoints... | |
d15a28e7 | 158 | Int_t rv ; |
159 | ||
160 | AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ; | |
161 | ||
162 | ||
ad8cfaf4 | 163 | Int_t phosmod1 = GetPHOSMod() ; |
92862013 | 164 | Int_t phosmod2 = clu->GetPHOSMod() ; |
d15a28e7 | 165 | |
92862013 | 166 | TVector3 locpos1; |
7932f811 | 167 | GetLocalPosition(locpos1) ; |
92862013 | 168 | TVector3 locpos2; |
169 | clu->GetLocalPosition(locpos2) ; | |
d15a28e7 | 170 | |
92862013 | 171 | if(phosmod1 == phosmod2 ) { |
7932f811 | 172 | Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ; |
d15a28e7 | 173 | if (rowdif> 0) |
7932f811 | 174 | rv = 1 ; |
d15a28e7 | 175 | else if(rowdif < 0) |
7932f811 | 176 | rv = -1 ; |
92862013 | 177 | else if(locpos1.Z()>locpos2.Z()) |
d15a28e7 | 178 | rv = -1 ; |
179 | else | |
180 | rv = 1 ; | |
181 | } | |
182 | ||
183 | else { | |
92862013 | 184 | if(phosmod1 < phosmod2 ) |
d15a28e7 | 185 | rv = -1 ; |
186 | else | |
187 | rv = 1 ; | |
188 | } | |
189 | ||
190 | return rv ; | |
191 | } | |
9f616d61 | 192 | //______________________________________________________________________________ |
baef0810 | 193 | void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py) const |
9f616d61 | 194 | { |
9f616d61 | 195 | |
9688c1dd | 196 | // Execute action corresponding to one event |
197 | // This member function is called when a AliPHOSRecPoint is clicked with the locator | |
198 | // | |
199 | // If Left button is clicked on AliPHOSRecPoint, the digits are switched on | |
200 | // and switched off when the mouse button is released. | |
201 | ||
202 | ||
203 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; | |
204 | if(!gime) return ; | |
205 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
83974468 | 206 | |
9688c1dd | 207 | static TGraph * digitgraph = 0 ; |
83974468 | 208 | |
9688c1dd | 209 | if (!gPad->IsEditable()) return; |
83974468 | 210 | |
9688c1dd | 211 | TH2F * histo = 0 ; |
212 | TCanvas * histocanvas ; | |
213 | ||
afa51c4e | 214 | const TClonesArray * digits = gime->Digits() ; |
9688c1dd | 215 | |
216 | switch (event) { | |
83974468 | 217 | |
9688c1dd | 218 | case kButton1Down: { |
219 | AliPHOSDigit * digit ; | |
220 | Int_t iDigit; | |
221 | Int_t relid[4] ; | |
83974468 | 222 | |
9688c1dd | 223 | const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ; |
224 | Float_t * xi = new Float_t[kMulDigit] ; | |
225 | Float_t * zi = new Float_t[kMulDigit] ; | |
83974468 | 226 | |
9688c1dd | 227 | // create the histogram for the single cluster |
228 | // 1. gets histogram boundaries | |
229 | Float_t ximax = -999. ; | |
230 | Float_t zimax = -999. ; | |
231 | Float_t ximin = 999. ; | |
232 | Float_t zimin = 999. ; | |
83974468 | 233 | |
9688c1dd | 234 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
235 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
236 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
237 | phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]); | |
238 | if ( xi[iDigit] > ximax ) | |
239 | ximax = xi[iDigit] ; | |
240 | if ( xi[iDigit] < ximin ) | |
241 | ximin = xi[iDigit] ; | |
242 | if ( zi[iDigit] > zimax ) | |
243 | zimax = zi[iDigit] ; | |
244 | if ( zi[iDigit] < zimin ) | |
245 | zimin = zi[iDigit] ; | |
246 | } | |
247 | ximax += phosgeom->GetCrystalSize(0) / 2. ; | |
248 | zimax += phosgeom->GetCrystalSize(2) / 2. ; | |
249 | ximin -= phosgeom->GetCrystalSize(0) / 2. ; | |
250 | zimin -= phosgeom->GetCrystalSize(2) / 2. ; | |
251 | Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ; | |
252 | Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ; | |
83974468 | 253 | |
9688c1dd | 254 | // 2. gets the histogram title |
83974468 | 255 | |
9688c1dd | 256 | Text_t title[100] ; |
257 | sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ; | |
83974468 | 258 | |
9688c1dd | 259 | if (!histo) { |
260 | delete histo ; | |
261 | histo = 0 ; | |
262 | } | |
263 | histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ; | |
83974468 | 264 | |
9688c1dd | 265 | Float_t x, z ; |
266 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { | |
267 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
268 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
269 | phosgeom->RelPosInModule(relid, x, z); | |
270 | histo->Fill(x, z, fEnergyList[iDigit] ) ; | |
271 | } | |
83974468 | 272 | |
9688c1dd | 273 | if (!digitgraph) { |
274 | digitgraph = new TGraph(kMulDigit,xi,zi); | |
275 | digitgraph-> SetMarkerStyle(5) ; | |
276 | digitgraph-> SetMarkerSize(1.) ; | |
277 | digitgraph-> SetMarkerColor(1) ; | |
278 | digitgraph-> Paint("P") ; | |
279 | } | |
83974468 | 280 | |
9688c1dd | 281 | // Print() ; |
282 | histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ; | |
283 | histocanvas->Draw() ; | |
284 | histo->Draw("lego1") ; | |
83974468 | 285 | |
9688c1dd | 286 | delete[] xi ; |
287 | delete[] zi ; | |
83974468 | 288 | |
9688c1dd | 289 | break; |
290 | } | |
83974468 | 291 | |
9688c1dd | 292 | case kButton1Up: |
293 | if (digitgraph) { | |
294 | delete digitgraph ; | |
295 | digitgraph = 0 ; | |
296 | } | |
297 | break; | |
9f616d61 | 298 | |
9688c1dd | 299 | } |
9f616d61 | 300 | } |
301 | ||
d15a28e7 | 302 | //____________________________________________________________________________ |
7932f811 | 303 | void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 304 | { |
b2a60966 | 305 | // Calculates the dispersion of the shower at the origine of the RecPoint |
306 | ||
e5b16749 | 307 | Float_t d = 0. ; |
308 | Float_t wtot = 0. ; | |
d15a28e7 | 309 | |
d084d50d | 310 | Float_t x = 0.; |
311 | Float_t z = 0.; | |
d15a28e7 | 312 | |
313 | AliPHOSDigit * digit ; | |
7b7c1533 | 314 | |
315 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; | |
316 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
d15a28e7 | 317 | |
e5b16749 | 318 | |
319 | // Calculates the center of gravity in the local PHOS-module coordinates | |
320 | ||
d15a28e7 | 321 | Int_t iDigit; |
e5b16749 | 322 | |
323 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
324 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
325 | Int_t relid[4] ; | |
326 | Float_t xi ; | |
327 | Float_t zi ; | |
328 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
329 | phosgeom->RelPosInModule(relid, xi, zi); | |
330 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
331 | x += xi * w ; | |
332 | z += zi * w ; | |
333 | wtot += w ; | |
334 | } | |
335 | x /= wtot ; | |
336 | z /= wtot ; | |
337 | ||
338 | ||
339 | // Calculates the dispersion in coordinates | |
340 | wtot = 0.; | |
88714635 | 341 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 342 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 343 | Int_t relid[4] ; |
344 | Float_t xi ; | |
345 | Float_t zi ; | |
92862013 | 346 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
347 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 348 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 349 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 | 350 | wtot+=w ; |
d084d50d | 351 | |
352 | ||
d15a28e7 | 353 | } |
e5b16749 | 354 | |
7932f811 | 355 | |
92862013 | 356 | d /= wtot ; |
d15a28e7 | 357 | |
7932f811 | 358 | fDispersion = TMath::Sqrt(d) ; |
c63c49e9 | 359 | |
d15a28e7 | 360 | } |
fad3e5b9 | 361 | //______________________________________________________________________________ |
e5b16749 | 362 | void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits) |
fad3e5b9 | 363 | { |
a4e98857 | 364 | // This function calculates energy in the core, |
365 | // i.e. within a radius rad = 3cm around the center. Beyond this radius | |
366 | // in accordance with shower profile the energy deposition | |
fad3e5b9 | 367 | // should be less than 2% |
368 | ||
fad3e5b9 | 369 | Float_t coreRadius = 3 ; |
370 | ||
e5b16749 | 371 | Float_t x = 0 ; |
372 | Float_t z = 0 ; | |
fad3e5b9 | 373 | |
374 | AliPHOSDigit * digit ; | |
7b7c1533 | 375 | |
376 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; | |
377 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
378 | ||
fad3e5b9 | 379 | Int_t iDigit; |
e5b16749 | 380 | |
381 | // Calculates the center of gravity in the local PHOS-module coordinates | |
382 | Float_t wtot = 0; | |
383 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
384 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
385 | Int_t relid[4] ; | |
386 | Float_t xi ; | |
387 | Float_t zi ; | |
388 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
389 | phosgeom->RelPosInModule(relid, xi, zi); | |
390 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
391 | x += xi * w ; | |
392 | z += zi * w ; | |
393 | wtot += w ; | |
394 | } | |
395 | x /= wtot ; | |
396 | z /= wtot ; | |
397 | ||
398 | ||
fad3e5b9 | 399 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 400 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 | 401 | Int_t relid[4] ; |
402 | Float_t xi ; | |
403 | Float_t zi ; | |
404 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
405 | phosgeom->RelPosInModule(relid, xi, zi); | |
406 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; | |
407 | if(distance < coreRadius) | |
7932f811 | 408 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 | 409 | } |
410 | ||
fad3e5b9 | 411 | } |
d15a28e7 | 412 | |
413 | //____________________________________________________________________________ | |
7932f811 | 414 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 415 | { |
b2a60966 | 416 | // Calculates the axis of the shower ellipsoid |
83974468 | 417 | |
e8dbb96e | 418 | Double_t wtot = 0. ; |
419 | Double_t x = 0.; | |
420 | Double_t z = 0.; | |
421 | Double_t dxx = 0.; | |
422 | Double_t dzz = 0.; | |
423 | Double_t dxz = 0.; | |
d15a28e7 | 424 | |
425 | AliPHOSDigit * digit ; | |
7b7c1533 | 426 | |
427 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; | |
428 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
429 | ||
d15a28e7 | 430 | Int_t iDigit; |
431 | ||
e5b16749 | 432 | |
d15a28e7 | 433 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 434 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 435 | Int_t relid[4] ; |
436 | Float_t xi ; | |
437 | Float_t zi ; | |
92862013 | 438 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
439 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 440 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 441 | dxx += w * xi * xi ; |
d15a28e7 | 442 | x += w * xi ; |
92862013 | 443 | dzz += w * zi * zi ; |
d15a28e7 | 444 | z += w * zi ; |
92862013 | 445 | dxz += w * xi * zi ; |
d15a28e7 | 446 | wtot += w ; |
447 | } | |
92862013 | 448 | dxx /= wtot ; |
d15a28e7 | 449 | x /= wtot ; |
92862013 | 450 | dxx -= x * x ; |
451 | dzz /= wtot ; | |
d15a28e7 | 452 | z /= wtot ; |
92862013 | 453 | dzz -= z * z ; |
454 | dxz /= wtot ; | |
455 | dxz -= x * z ; | |
d15a28e7 | 456 | |
69183710 | 457 | // //Apply correction due to non-perpendicular incidence |
458 | // Double_t CosX ; | |
459 | // Double_t CosZ ; | |
7b7c1533 | 460 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
461 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
462 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; | |
69183710 | 463 | |
464 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; | |
465 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; | |
466 | ||
467 | // dxx = dxx/(CosX*CosX) ; | |
468 | // dzz = dzz/(CosZ*CosZ) ; | |
469 | // dxz = dxz/(CosX*CosZ) ; | |
470 | ||
471 | ||
7932f811 | 472 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
473 | if(fLambda[0] > 0) | |
474 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; | |
e8dbb96e | 475 | |
7932f811 | 476 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
477 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. | |
478 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; | |
e8dbb96e | 479 | else |
7932f811 | 480 | fLambda[1]= 0. ; |
d15a28e7 | 481 | } |
482 | ||
b2a60966 | 483 | //____________________________________________________________________________ |
7932f811 | 484 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 | 485 | { |
baef0810 | 486 | // Evaluates all shower parameters |
487 | ||
7932f811 | 488 | AliPHOSRecPoint::EvalAll(logWeight,digits) ; |
489 | EvalLocalPosition(logWeight, digits) ; | |
490 | EvalElipsAxis(logWeight, digits) ; | |
491 | EvalDispersion(logWeight, digits) ; | |
e5b16749 | 492 | EvalCoreEnergy(logWeight, digits); |
a6eedfad | 493 | EvalTime(digits) ; |
ad8cfaf4 | 494 | } |
495 | //____________________________________________________________________________ | |
7932f811 | 496 | void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits) |
b2a60966 | 497 | { |
498 | // Calculates the center of gravity in the local PHOS-module coordinates | |
b2a60966 | 499 | Float_t wtot = 0. ; |
500 | ||
501 | Int_t relid[4] ; | |
502 | ||
503 | Float_t x = 0. ; | |
504 | Float_t z = 0. ; | |
505 | ||
506 | AliPHOSDigit * digit ; | |
507 | ||
7b7c1533 | 508 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
509 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); | |
b2a60966 | 510 | |
511 | Int_t iDigit; | |
512 | ||
b2a60966 | 513 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 514 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
b2a60966 | 515 | |
516 | Float_t xi ; | |
517 | Float_t zi ; | |
518 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
519 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 520 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
b2a60966 | 521 | x += xi * w ; |
522 | z += zi * w ; | |
523 | wtot += w ; | |
b2a60966 | 524 | |
9ce1a8d9 | 525 | } |
69183710 | 526 | |
527 | x /= wtot ; | |
528 | z /= wtot ; | |
ad8cfaf4 | 529 | |
530 | // Correction for the depth of the shower starting point (TDR p 127) | |
531 | Float_t para = 0.925 ; | |
532 | Float_t parb = 6.52 ; | |
533 | ||
1b799736 | 534 | Float_t xo,yo,zo ; //Coordinates of the origin |
535 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
536 | ||
5830e1d9 | 537 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 | 538 | |
539 | //Transform to the local ref.frame | |
540 | Float_t xoL,yoL ; | |
541 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; | |
542 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; | |
543 | ||
fd84cb73 | 544 | Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL; |
1b799736 | 545 | |
546 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; | |
547 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; | |
ad8cfaf4 | 548 | |
549 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; | |
550 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; | |
ad8cfaf4 | 551 | |
552 | fLocPos.SetX(x - depthx) ; | |
b2a60966 | 553 | fLocPos.SetY(0.) ; |
ad8cfaf4 | 554 | fLocPos.SetZ(z - depthz) ; |
b2a60966 | 555 | |
a6eedfad | 556 | fLocPosM = 0 ; |
b2a60966 | 557 | } |
558 | ||
d15a28e7 | 559 | //____________________________________________________________________________ |
ad8cfaf4 | 560 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 | 561 | { |
b2a60966 | 562 | // Finds the maximum energy in the cluster |
563 | ||
d15a28e7 | 564 | Float_t menergy = 0. ; |
565 | ||
566 | Int_t iDigit; | |
567 | ||
568 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
569 | ||
570 | if(fEnergyList[iDigit] > menergy) | |
571 | menergy = fEnergyList[iDigit] ; | |
572 | } | |
573 | return menergy ; | |
574 | } | |
575 | ||
576 | //____________________________________________________________________________ | |
ad8cfaf4 | 577 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const |
d15a28e7 | 578 | { |
b2a60966 | 579 | // Calculates the multiplicity of digits with energy larger than H*energy |
580 | ||
d15a28e7 | 581 | Int_t multipl = 0 ; |
582 | Int_t iDigit ; | |
583 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
584 | ||
585 | if(fEnergyList[iDigit] > H * fAmp) | |
586 | multipl++ ; | |
587 | } | |
588 | return multipl ; | |
589 | } | |
590 | ||
591 | //____________________________________________________________________________ | |
a0636361 | 592 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy, |
7932f811 | 593 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 | 594 | { |
b2a60966 | 595 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 | 596 | // energy difference between two local maxima |
b2a60966 | 597 | |
d15a28e7 | 598 | AliPHOSDigit * digit ; |
599 | AliPHOSDigit * digitN ; | |
600 | ||
601 | ||
602 | Int_t iDigitN ; | |
603 | Int_t iDigit ; | |
604 | ||
7932f811 | 605 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
a0636361 | 606 | maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ; |
7932f811 | 607 | |
d15a28e7 | 608 | |
6ad0bfa0 | 609 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
a0636361 | 610 | if(maxAt[iDigit]) { |
611 | digit = maxAt[iDigit] ; | |
83974468 | 612 | |
6ad0bfa0 | 613 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
7932f811 | 614 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 | 615 | |
9f616d61 | 616 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 | 617 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
a0636361 | 618 | maxAt[iDigitN] = 0 ; |
6ad0bfa0 | 619 | // but may be digit too is not local max ? |
7932f811 | 620 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
a0636361 | 621 | maxAt[iDigit] = 0 ; |
d15a28e7 | 622 | } |
623 | else { | |
a0636361 | 624 | maxAt[iDigit] = 0 ; |
6ad0bfa0 | 625 | // but may be digitN too is not local max ? |
7932f811 | 626 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
a0636361 | 627 | maxAt[iDigitN] = 0 ; |
d15a28e7 | 628 | } |
629 | } // if Areneighbours | |
630 | } // while digitN | |
631 | } // slot not empty | |
632 | } // while digit | |
633 | ||
634 | iDigitN = 0 ; | |
6ad0bfa0 | 635 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
a0636361 | 636 | if(maxAt[iDigit]){ |
d15a28e7 | 637 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 | 638 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
639 | iDigitN++ ; | |
d15a28e7 | 640 | } |
641 | } | |
642 | return iDigitN ; | |
643 | } | |
9688c1dd | 644 | //____________________________________________________________________________ |
645 | void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits){ | |
646 | ||
647 | Float_t maxE = 0; | |
648 | Int_t maxAt = 0; | |
649 | for(Int_t idig=0; idig < fMulDigit; idig++){ | |
650 | if(fEnergyList[idig] > maxE){ | |
651 | maxE = fEnergyList[idig] ; | |
652 | maxAt = idig; | |
653 | } | |
654 | } | |
655 | fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ; | |
656 | ||
657 | } | |
d15a28e7 | 658 | //____________________________________________________________________________ |
659 | void AliPHOSEmcRecPoint::Print(Option_t * option) | |
660 | { | |
b2a60966 | 661 | // Print the list of digits belonging to the cluster |
662 | ||
d15a28e7 | 663 | cout << "AliPHOSEmcRecPoint: " << endl ; |
664 | ||
d15a28e7 | 665 | Int_t iDigit; |
7932f811 | 666 | cout << " digits # = " ; |
667 | for(iDigit=0; iDigit<fMulDigit; iDigit++) | |
668 | cout << fDigitsList[iDigit] << " " ; | |
669 | cout << endl ; | |
670 | ||
671 | cout << " Energies = " ; | |
672 | for(iDigit=0; iDigit<fMulDigit; iDigit++) | |
673 | cout << fEnergyList[iDigit] << " "; | |
674 | cout << endl ; | |
83974468 | 675 | |
bc68d12c | 676 | cout << " Primaries " ; |
677 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) | |
678 | cout << fTracksList[iDigit] << " " << endl ; | |
679 | ||
d15a28e7 | 680 | cout << " Multiplicity = " << fMulDigit << endl ; |
681 | cout << " Cluster Energy = " << fAmp << endl ; | |
bc68d12c | 682 | cout << " Number of primaries " << fMulTrack << endl ; |
83974468 | 683 | cout << " Stored at position " << GetIndexInList() << endl ; |
684 | ||
d15a28e7 | 685 | } |
88714635 | 686 | |
7932f811 | 687 |